EP 3869499 A1 20210825 - ACOUSTIC LINER WITH NON-UNIFORM VOLUMETRIC DISTRIBUTION
Title (en)
ACOUSTIC LINER WITH NON-UNIFORM VOLUMETRIC DISTRIBUTION
Title (de)
AKUSTISCHE AUSKLEIDUNG MIT UNGLEICHMÄSSIGER VOLUMETRISCHER VERTEILUNG
Title (fr)
DOUBLURE ACOUSTIQUE À DISTRIBUTION VOLUMÉTRIQUE NON UNIFORME
Publication
Application
Priority
- US 202062979662 P 20200221
- US 202016863218 A 20200430
Abstract (en)
Disclosed is an acoustic liner (100) for a gas turbine engine (20), having: a face sheet (110); a first plurality of resonator chamber cavities, distributed non-uniformly against the face sheet, the first plurality of resonator chamber cavities defining a first aggregated volume that is configured to target noise attenuation at a first frequency, the first plurality of resonator chamber cavities include first and second resonator chamber cavities (130, 140) fluidly coupled to each other, which have different configurations with respect to each other; and a second plurality of resonator chamber cavities, distributed non-uniformly against the face sheet, the second plurality of resonator chamber cavities define a second aggregated volume that differs from the first aggregated volume and is configured to target noise attenuation at a second frequency, the second plurality of resonator chamber cavities include third and fourth resonator chamber cavities (160, 170) fluidly coupled to each other, which have different configurations with respect to each other.
IPC 8 full level
G10K 11/172 (2006.01); F02C 7/045 (2006.01)
CPC (source: EP US)
F02C 7/045 (2013.01 - EP); F02C 7/24 (2013.01 - US); F02K 1/827 (2013.01 - EP); F04D 29/665 (2013.01 - US); G10K 11/172 (2013.01 - EP); F05D 2220/32 (2013.01 - US); F05D 2230/60 (2013.01 - US); F05D 2260/96 (2013.01 - US); F05D 2260/963 (2013.01 - EP)
Citation (search report)
- [XY] CA 2170609 A1 19960111 - SHORT BROTHERS PLC [GB]
- [X] US 2019304428 A1 20191003 - SANDIFORD A DAVID [US]
- [I] EP 3537429 A1 20190911 - GEN ELECTRIC [US]
- [Y] US 2017167291 A1 20170615 - KOROLY CHRISTOPHER C [US]
- [Y] EP 3450738 A1 20190306 - MRA SYSTEMS LLC [US]
- [A] US 3819009 A 19740625 - MOTSINGER R
Citation (examination)
CA 2170609 C 20060718 - SHORT BROTHERS PLC [GB]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3869499 A1 20210825; US 11339720 B2 20220524; US 2021277829 A1 20210909
DOCDB simple family (application)
EP 21158078 A 20210219; US 202016863218 A 20200430